A tobacco shredding device

Abstract

This invention relates to the field of tobacco shred recycling equipment. The invention provides a tobacco shred screening device, comprising: a vibrating screen, a receiving hood, an air separation device, and a collection box. The vibrating screen has a stepped internal screen surface. An air separation device is installed inside the vibrating screen for air separation of the material during the tobacco shred screening process. A receiving hood is installed along the inlet end of the vibrating screen to agitate and disperse the material. A collection box is installed along the outlet end of the vibrating screen to collect the tobacco shreds and impurities separately. By setting up the receiving hood, the cut and defective cigarettes can be agitated and loosened once. The vibrating screen can cause the separated tobacco shreds to move forward in a turbulent motion. In addition, under the action of gas along the stepped surface of the air separation device, the tobacco shreds and auxiliary materials can be air-separated and dispersed, further ensuring that the tobacco shreds and auxiliary materials do not tangle together, better separating the tobacco shreds at the ends of the cigarettes, and improving work efficiency and tobacco shred separation efficiency.

Description

Technical Field

[0001] This invention relates to the field of tobacco shred recycling technology, and more specifically to a tobacco shred screening device. Background Technology

[0002] In the cigarette production process, a certain number of defective cigarettes are inevitably produced. Defective cigarettes need to be transported to the cigarette waste processing line for processing, where the tobacco, filter, and cigarette paper are completely separated, and the recycled tobacco is reused.

[0003] Currently, the defective cigarette processing equipment used in cigarette production workshops relies solely on conveyor belts to transport defective cigarettes, employing a violent agitation and shredding method. This method inevitably produces fine paper scraps, which become mixed with the sorted tobacco, resulting in substandard impurity levels and necessitating downgrading of the tobacco, thus increasing production costs. To address these technical problems, a solution is to design a spiral cutting device. Patent application number 202310515669.3 describes a spiral cutting and accelerating motion device for defective cigarettes with flavor capsules. This device rotates the cigarette, allowing for more complete cutting and preventing fine paper scraps from forming in the non-adhesive area at the cigarette joint, thereby improving the purity of the recycled tobacco.

[0004] However, the experiment found that due to the effect of the cigarette cutting disc on the tobacco, the tobacco at the end and the end of a cigarette is relatively fuller than the middle. It is difficult to separate the tobacco at these two positions after the cigarette is cut. The existing tobacco separation device uses a vibrating screen to screen the tobacco. This method cannot completely process the cut cigarette and the separation effect is not good. Manual intervention is still required, which is time-consuming and labor-intensive.

[0005] In view of the above problems, the inventors of this invention have finally obtained this invention after a long period of research and practice. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a tobacco shredding device that can better separate tobacco shredding from the ends of cigarette sticks without manual processing, thereby improving work efficiency and tobacco shredding separation efficiency.

[0007] The technical solution adopted in this invention is as follows:

[0008] A tobacco shredding device is provided, comprising a vibrating screen, a receiving hood, an air separator, and a collection box. The receiving hood is disposed above the feed end of the vibrating screen and includes a hood body. A stirring roller is disposed inside the hood body. The receiving hood is used to receive defective tobacco materials cut in the previous process and to agitate and disperse the materials through the stirring roller before outputting them to the feed end of the vibrating screen. The screen surface of the vibrating screen has a stepped structure, and the air separator is installed at the steps of the screen surface. The collection box is located below the discharge end of the vibrating screen.

[0009] Furthermore, the vibrating screen includes a stepped screen, a tobacco conveyor, and a vibrating motor; the stepped screen includes a horizontally extending screen surface with screen holes evenly distributed on the screen surface; the tobacco conveyor is connected to the stepped screen and is disposed below the screen surface to receive tobacco falling from the screen holes; the vibrating motor drives the stepped screen and the tobacco conveyor to vibrate.

[0010] Furthermore, the vibrating motor is mounted on the side of the tobacco conveyor via a motor mounting plate; a vibrating screen support is provided below the vibrating screen, and the vibrating screen support is connected to the tobacco conveyor via a triangular buffer.

[0011] Furthermore, the width of the sieve holes is 4-5 mm.

[0012] Furthermore, the collection box includes an auxiliary material collection box and a tobacco shred collection box. The tobacco shred collection box is connected to the discharge end of the tobacco shred transport body, and the auxiliary material collection box is connected to the discharge end of the stepped screen.

[0013] Furthermore, the air separation device is installed on the lower side of the step, and the air separation device includes a shield and an air jet pipe; the air jet pipe is installed at a height lower than the high surface of the step, the air jet pipe is arranged along the width direction of the screen surface, the upper surface of the air jet pipe is evenly distributed with air holes along its length direction, the shield covers the air holes directly above them, and the air jet pipe is connected to an air source.

[0014] Furthermore, one end of the jet pipe extends to the outside of the stepped screen and is connected to an air valve, which is connected to an air source.

[0015] Furthermore, an inlet is formed on one side of the receiving cover, an outlet is formed at the bottom of the cover, the stirring roller is horizontally arranged inside the cover, and a drive motor is installed on the outside of the cover to drive the stirring roller to rotate.

[0016] Furthermore, a compression gap is formed between the stirring roller and the inner wall of the cover. After the material enters the inlet of the cover, it can be driven by the rotation of the stirring roller to pass through the compression gap and flow out of the outlet of the cover, thereby achieving a dual dispersion of stirring and compression.

[0017] Furthermore, the receiving cover also includes receiving cover columns disposed on both sides of the vibrating screen, and a receiving cover bracket is fixed on the receiving cover column. The receiving cover bracket horizontally spans above the screen surface of the vibrating screen, and the cover body is fixedly connected to the receiving cover bracket.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The tobacco shredding device of this invention, by setting a receiving cover, can stir the tobacco sticks cut in the previous cutting process, and loosen the cut defective tobacco sticks by stirring, ensuring the shredding effect. The vibrating screen forms a stepped structure. With the cooperation of the air separation device, on the one hand, it can make the separated tobacco sticks move forward and gradually fall from the screen holes into the tobacco conveyor body of the lower part of the vibrating screen, and finally fall into the tobacco collection box. On the other hand, under the action of the gas along the stepped surface of the air separation device, the tobacco sticks and auxiliary materials can be dispersed by air separation, further ensuring that the tobacco sticks and auxiliary materials do not tangle together, which would affect the tobacco stick recycling effect. It can better separate the tobacco sticks at the ends of the cigarette sticks, eliminating the need for manual processing and improving work efficiency and tobacco stick separation efficiency. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A three-dimensional structural schematic diagram of a tobacco shredding device according to an embodiment of the present invention is shown;

[0022] Figure 2 A front view of a tobacco sieving device according to an embodiment of the present invention is shown;

[0023] Figure 3 A schematic diagram of the structure of a vibrating screen according to an embodiment of the present invention is shown;

[0024] Figure 4 A schematic diagram of the mounting structure of the vibration motor according to an embodiment of the present invention is shown;

[0025] Figure 5 A schematic diagram of the receiving cover according to an embodiment of the present invention is shown;

[0026] Figure 6 A schematic diagram of the structure of an air distribution device according to an embodiment of the present invention is shown.

[0027] In the diagram: 1-Vibrating screen, 101-Step screen, 102-Tobacco conveyor, 103-Vibrating screen support, 104-Triangular buffer, 105-Vibrating motor, 106-Motor mounting plate, 107-Motor connecting rod, 108-Screen hole, 109-Step, 110-Air jet pipe placement hole, 2-Receiving hood, 201-Agitator roller drive motor, 202-Coupling, 203-Bearing, 204-Bearing seat, 205-Cover body, 206-Agitator roller, 207-Receiving hood column, 208-Receiving hood bracket, 209-Agitator roller drive motor support plate, 3-Air separator, 301-Shielding cover, 302-Air jet pipe, 303-Air hole, 304-Air valve, 4-Collection box, 401-Auxiliary material collection box, 402-Tobacco collection box. Detailed Implementation

[0028] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Example 1

[0034] Reference Figures 1-6 In this embodiment, the tobacco sieving device includes a vibrating screen 1, a receiving hood 2, an air separator 3, and a collection box 4. The receiving hood 2 is positioned above the feed end of the vibrating screen 1. The receiving hood 2 includes a hood body 205, inside which a stirring roller 206 is installed. The receiving hood 2 receives the defective tobacco material cut in the previous process and disperses it using the stirring roller 206 before outputting it to the feed end of the vibrating screen 1. The screen surface of the vibrating screen 1 has a stepped structure, and the air separator 3 is installed at the step 109 of the screen surface. The collection box 4 is located below the discharge end of the vibrating screen 1.

[0035] The receiving cover 2 has an inlet on one side of the cover 205 and an outlet at the bottom. The stirring roller 206 is horizontally arranged inside the cover 205. A drive motor 201 is installed on the outside of the cover 205. The drive motor 201 is used to drive the stirring roller 206 to rotate.

[0036] The vibrating screen 1 includes a stepped screen 101, a tobacco conveyor 102, and a vibrating motor 105. The stepped screen 101 includes a horizontally extending screen surface with screen holes 108 evenly distributed on the screen surface. The tobacco conveyor 102 is connected to the stepped screen 101 and is disposed below the screen surface to receive tobacco falling from the screen holes 108. The vibrating motor 105 drives the stepped screen 101 and the tobacco conveyor 102 to vibrate.

[0037] Example 2

[0038] Reference Figures 1-6In this embodiment, the tobacco shredding device includes a vibrating screen 1, a receiving hood 2, an air separation device 3, and a collection box 4. The receiving hood 2 is located above the feed end of the vibrating screen 1. The receiving hood 2 includes a hood body 205, and a stirring roller 206 is installed inside the hood body. The receiving hood 2 is used to receive the defective tobacco materials cut in the previous process, and the stirring roller 206 disperses the materials before outputting them to the feed end of the vibrating screen 1. The screen surface of the vibrating screen 1 has a stepped structure, and the air separation device 3 is installed at the step 109 of the screen surface. The collection box 4 is located below the discharge end of the vibrating screen 1. The vibrating screen 1 is equipped with an air separation device 3 for air separation of materials during the tobacco shredding process. The receiving hood 2 is installed along the feed end of the vibrating screen 1 to stir and disperse the materials. The receiving hood 2 can stir the tobacco materials cut in the previous cutting process, and the defective tobacco materials are stirred and loosened once. The collection box 4 is installed along the discharge end of the vibrating screen 1 to collect tobacco and impurities separately. The screen surface of the vibrating screen 1 has a stepped structure. With the cooperation of the air separation device 3, on the one hand, the separated tobacco shreds can be moved forward by bumping and gradually fall from the screen holes 108 into the tobacco shred transport body 102 in the lower part of the vibrating screen 1, and finally fall into the tobacco shred collection box 402. On the other hand, under the action of the gas along the vertical surface of the steps, the tobacco shreds and auxiliary materials can be separated and dispersed by air separation device 3, which further ensures that the tobacco shreds and auxiliary materials will not be tangled together, affecting the tobacco shred recovery effect, and better separating the tobacco shreds at the end of the cigarette stick without manual processing, thus improving work efficiency and tobacco shred separation efficiency.

[0039] Specifically, the vibrating screen 1 includes a stepped screen 101, a tobacco conveyor 102, a vibrating motor 105, and a damping mechanism. The stepped screen 101 forms a stepped structure along the screen surface. Screen holes 108 are evenly distributed on the surface of the stepped screen 101. The tobacco conveyor 102 for receiving tobacco is installed at the bottom of the stepped screen 101. The vibrating motor 105 and the damping mechanism are installed on the stepped screen 101. The vibrating screen 1 is integrally formed by the stepped screen 101 and the tobacco conveyor 102. The stepped screen 101 is above the tobacco conveyor 102. The stepped screen 101 is equipped with motor fixing plates 106 on both sides of its bottom. A vibrating motor 105 is installed on the motor fixing plate 106. Triangular buffers 104 are installed at the four corners of the bottom of the stepped screen 101. The bottom of the triangular buffer 104 is connected to the screen support 103. The screen 1 is driven by the vibrating motor 105. The vibrating motor 105 is connected to the side of the tobacco conveyor 102 through the motor fixing plate 106. There are two vibrating motors 105. The screen 1 is supported by the screen support 103. The screen support 103 and the screen 1 are connected by the triangular buffer 104. The triangular buffer 104 is an elastic connector. The head and tail ends are fixed connectors. The two ends are connected to the middle part through iron plates. When the screen 11 vibrates, the two ends move towards the middle part. The triangular buffer 104 is a commonly used component for supporting and connecting the screen 1. Those skilled in the art should know this, and it will not be described in detail here.

[0040] Preferably, the collection box 4 includes an auxiliary material collection box 401 and a tobacco shred collection box 402. The tobacco shred collection box 402 is connected to the discharge end of the tobacco shred conveyor 102, and the auxiliary material collection box 401 is connected to the discharge end of the stepped screen 101.

[0041] In this embodiment, the air separation device 3 is installed on the lower side of the step 109. The air separation device 3 includes a shield 301, an air jet pipe 302, and an air valve 304. The air jet pipe 302 is horizontally installed on the lower side of the stepped screen 101. One end of the air jet pipe 302 extends to the outside of the stepped screen 101 and is equipped with the air valve 304. The other end of the air valve 304 is equipped with a fan. Air holes 303 are evenly distributed on the top surface of the air jet pipe 302, and a shield 301 for shielding the blown tobacco and auxiliary materials is installed on the top of the air jet pipe 302. More specifically, the jet pipe 302 passes through the jet pipe placement hole 110 and is fixed to the side of the stepped screen 101 by screws. The height of the jet pipe 302 is lower than the height of the step 109. Several air holes 303 are opened on the top of the jet pipe 302. The shield 301 is set inside the stepped screen 101 and is located above the jet pipe 302. It is used to block the tobacco and auxiliary materials blown up by the jet pipe 302. An air valve 304 is connected to the jet pipe 302.

[0042] In this embodiment, the receiving cover 2 includes a drive motor 201, a cover body 205, and a stirring roller 206. The cover body 205 is mounted on the top of the feed end of the vibrating screen 1 via a receiving cover bracket 208. A feed inlet is provided on one side of the cover body 205, and a discharge outlet is formed at the bottom. The stirring roller 206, which is connected to the drive motor 201, is horizontally arranged inside the cover body 205. More specifically, the cover body 205 has openings on its side and bottom. The side opening is used to receive defective cigarettes transported from the previous process. The material is conveyed to the top position of the stirring roller 206 for stirring. The stirring roller drive motor support plate 209 is connected to the outer side of the cover body 205. The shaft of the stirring roller 206 is fixed to the cover body 205 via a bearing 203 and a bearing seat 204, and is connected to the shaft of the stirring roller 206 drive motor 201 via a coupling 202.

[0043] Preferably, the receiving cover support 208 includes receiving cover columns 207 disposed on both sides of the vibrating screen 1. Two horizontal receiving cover 2 connecting rods are bolted to the two receiving cover columns 207. Ear plates are bolted to the four corners of the bottom of the cover body 205, and the ear plates are bolted to the connecting rods of the receiving cover 2. The advantage of this design is that the receiving cover 2 is independent of the vibrating screen 1 through the receiving cover support 208 and will not move with the vibration of the vibrating screen 1, ensuring normal material dispersion. During this process, in addition to the normal stirring action of the stirring roller 206 to disperse the material, the gap between the stirring roller 206 and the cover body 205 can squeeze and stir the material, further ensuring the material dispersion effect.

[0044] In a preferred embodiment, the step height is 10-15cm, the width of each sieve hole 108 is 4-5mm, the air valve 304 is an air valve with an air pressure gauge, which plays the role of stabilizing and controlling air pressure, the vibrating motors 105 are connected by a motor connecting rod 107, the vibrating motor 105 is a 1.5KW screen vibrator, and the stirring roller 206 is driven by a Pfide 60KTYZ motor.

[0045] In specific implementation, the receiving cover 2 is equipped with a stirring roller 206, which stirs the cigarettes cut in the previous cutting process, and loosens the cut defective cigarettes. The air separation device 3 is equipped with a jet pipe 302, which sprays gas upward from the air hole. The gas acts on the cut defective cigarettes falling from the vibrating screen 1, and performs air separation on the cut defective cigarettes, making the tobacco easier to separate. Under the action of the vibrating screen 1, the separated tobacco moves forward and gradually falls from the screen hole 108 into the tobacco conveyor 102 in the lower part of the vibrating screen 1, and finally falls into the tobacco collection box 402. At the same time, the width of the screen hole 108 is 4-5mm, while the diameter of the cigarette is generally 6-7.7mm. The cut auxiliary material can only be on the stepped screen 101. The auxiliary material falls from the upper part of the stepped screen 101 of the vibrating screen 11 into the auxiliary material collection box 401.

[0046] The working process of this invention is as follows: The cigarettes cut in the previous cutting process are conveyed to the top of the stirring roller 206 via a conveyor belt. The stirring roller 206 is driven to rotate to the inner side of the cover 205. The stirring roller 206 can stir and loosen the material. During this process, in addition to the normal stirring action of the stirring roller 206 to disperse the material, the gap between the stirring roller 206 and the cover 205 can squeeze and stir the material, further ensuring the dispersion effect of the material. The dispersed material reaches the vibrating screen 1. During this process, under the action of the vibrating screen 1, the separated tobacco shreds move forward and gradually fall from the screen holes 108 into the tobacco shred transport body 102 in the lower part of the vibrating screen 1, and finally fall into the tobacco shred collection box 402. After the air separation device 3 is started, it can blow the material upward. Due to the different quality of tobacco shreds and auxiliary materials, an air separation effect is formed to separate them, further ensuring thorough and effective screening. The tobacco shreds finally enter the tobacco shred collection box 402, and the auxiliary materials finally enter the auxiliary material collection box 401.

[0047] The above are merely preferred embodiments of the present invention and are illustrative rather than restrictive. The structure and connection methods of the components in the present invention can be varied, and any equivalent transformations and improvements made based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A tobacco shredding screening device, characterized in that, The system includes a vibrating screen (1), a receiving hood (2), an air separator (3), and a collection box (4). The receiving hood (2) is located above the feed end of the vibrating screen (1). The receiving hood (2) includes a hood body (205), and a stirring roller (206) is installed inside the hood body. The receiving hood (2) is used to receive the defective cigarette material cut in the previous process, and the stirring roller (206) disperses the material before outputting it to the feed end of the vibrating screen (1). The screen surface of the vibrating screen (1) has a stepped structure, and the air separator (3) is installed at the step (109) of the screen surface. The collection box (4) is located below the discharge end of the vibrating screen (1); the air separation device (3) is installed on the lower side of the step (109), and the air separation device (3) includes a shield (301) and an air jet pipe (302); the air jet pipe (302) is set at a height lower than the high surface of the step (109), the air jet pipe (302) is arranged along the width direction of the screen surface, the upper surface of the air jet pipe (302) is evenly distributed with air holes (303) along its length direction, the shield (301) shields the air holes (303) directly above, and the air jet pipe (302) is connected to the air source.

2. The tobacco shredding screening device as described in claim 1, characterized in that, The vibrating screen (1) includes a stepped screen (101), a tobacco conveyor (102), and a vibrating motor (105); the stepped screen (101) includes a horizontally extending screen surface with screen holes (108) evenly distributed on the screen surface; the tobacco conveyor (102) is connected to the stepped screen (101) and is disposed below the screen surface to receive tobacco falling from the screen holes (108); the vibrating motor (105) drives the stepped screen (101) and the tobacco conveyor (102) to vibrate.

3. The tobacco shredding screening device as described in claim 2, characterized in that, The vibrating motor (105) is mounted on the side of the tobacco conveyor (102) via a motor fixing plate (106); a vibrating screen support (103) is provided below the vibrating screen (1), and the vibrating screen support (103) is connected to the tobacco conveyor (102) via a triangular buffer (104).

4. The tobacco shredding screening device as described in claim 2, characterized in that, The width of the sieve hole (108) is 4~5mm.

5. A tobacco shredding screening device as described in claim 2 or 3, characterized in that, The collection box (4) includes an auxiliary material collection box (401) and a tobacco collection box (402). The tobacco collection box (402) is connected to the discharge end of the tobacco conveyor (102), and the auxiliary material collection box (401) is connected to the discharge end of the stepped screen (101).

6. The tobacco shredding screening device as described in claim 2, characterized in that, One end of the jet pipe (302) extends to the outside of the stepped screen (101) and is connected to the air valve (304), which is connected to the air source.

7. The tobacco shredding screening device as described in claim 1, characterized in that, The receiving cover (2) has an inlet on one side of the cover (205) and an outlet at the bottom. The stirring roller (206) is horizontally arranged inside the cover (205). A drive motor (201) is installed on the outside of the cover (205). The drive motor (201) is used to drive the stirring roller (206) to rotate.

8. The tobacco shredding screening device as described in claim 7, characterized in that, A compression gap is formed between the stirring roller (206) and the inner wall of the cover (205). After the material enters the inlet of the cover (205), it can be driven by the rotation of the stirring roller (206) to pass through the compression gap and flow out of the outlet of the cover (205), thereby making the material both agitated and compressed for dispersion.

9. The tobacco shredding screening device as described in claim 7, characterized in that, The receiving cover (2) also includes receiving cover columns (207) disposed on both sides of the vibrating screen (1). A receiving cover bracket (208) is fixed on the receiving cover column (207). The receiving cover bracket (208) is horizontally spanning above the screen surface of the vibrating screen (1). The cover body (205) is fixedly connected to the receiving cover bracket (208).

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